Improvement in accordeons



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Letters Patent No. 106,018, dated August 2, 1870.

Moon- IMPROVEMENT IN A'CCORDEONS.

The Schedule referred to in these Letters Patent andmaking part of thesame.

To all whom it may concern:

Be it known that I, CARL FRIEDRICH ZIMMERA MANN, of the city and countyofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in Accordcons; and I do hereby declare that the following isa full, clear, and exact description of the same, reference being had tothe accompanying drawing and to thc lett-ers of reference markcd there,-

on. l

My invention consists in adding to the finger-board supplemental keys,which produce different notes in drawing and pressing, that is, each keyproduces two different notes,vone in drawing and another in pressmg.

On reference to the accompanying drawing making part of thisspecification- Figure l is a front elevation;

Figure 2 shows the scale for the old style accordeon;

Figure 3 shows the scale produced by the first two supplemental keys;and

Figure 4 shows the scale produced by the second two supplemental keys.

As before stated, this invention consists in adding to the finger-boardof au accordeon supplemental keys, which produce different notes indrawing and pressing, as shown in the accompanying drawing, fig. l.

ln the first octave, A and B are the supplemental keys, and C and D thesupplemental keys in the second octave.

The scale, fig.V 2, is produced bythe old-style accordeon, making the Cscale; the scale, fig. 3, is produced by the supplemental key Ain therst octave andthe supplemental key C in the second octave, making the Fscale; and the scale, iig. 4, is produced by the supplemental keyB inthe iirst octave and the supplemental key D in the second octave, makingthe G scale. Therefore, my improved accordeon produces the differentscales, as follows: the first is C, in the old style; the supplementalkeys A and C produce the second or I" scale, and the supplemental keys Band D produce the third or G scale, and so on, according as theaccordeon is tuned.

If another row of octaves were added tothe accordeon, it would requireanother row of supplemental keys to produce the other three scales.

W'hat I claim as my invention, and desire to secure by Letters Patent,is-

An accordeon having the supplemental keys A B C D, each having twodifferent notes, one in drawing and one iu pressing, substantially asand for the purpose shown and described.

` CARL FRIEDRICH ZIMMER-MANN. Witnesses:

C. G. ZIMMERMANN,

FRANCIS D. PAsToRIUs.

